US Patent Issued to DIC on Sept. 15 for "Aqueous pigment dispersion and inkjet ink" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,599, issued on Sept. 15, was assigned to DIC Corp. (Tokyo).

"Aqueous pigment dispersion and inkjet ink" was invented by Yuuya Enomoto (Kamisu, Japan), Toshihiro Seki (Kamisu, Japan) and Maiko Kitade (Kitaadachi-gun, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an aqueous pigment dispersion containing a bisacetoacetarylide pigment (A), a dispersant (B), and an aqueous medium (C) and having an absorbance ratio represented by (absorbance at a wavelength of 408 nm)/(absorbance at a wavelength of 450 nm) of 1.40 or more and to an inkjet ink containing the aqueous pigment dispersion."

The patent was filed on Marc...